作业帮Tom ___better than to ask Dick for help .A.shall know B.shouldn't knowC.has knownD.should have known
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Tom ___better than to ask Dick for help .A.shall know B.shouldn't knowC.has knownD.should have known
Tom ___better than to ask Dick for help .
A.shall know
B.shouldn't know
C.has known
D.should have known
Tom ___better than to ask Dick for help .A.shall know B.shouldn't knowC.has knownD.should have known
D
这里有一个should+ 完成时构成的虚拟语气,和现在事实相反,也就是事实是他去找dick帮助了,而这里说 Tom应该只晓得更多而不是找dick寻求帮助.
D 对过去的判断
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